title: Computer-controlled dynamic phantom for ultrasound hyperthermia studies.
abstract: A dynamic phantom system for use in evaluating hyperthermia heating equipment has been designed, constructed, and tested. It consists of four in vitro preserved canine kidneys perfused with an 80% ethanol preparation by a single pump, plus four computer-controlled valves and four flow meters. The flow rate to each kidney is computer-controlled, giving flexibility in the types of spatial and temporal flow patterns possible. Examples are given for both step and ramp changes in flow, and for a temperature dependent flow which has been used to simulate physiological responses to elevated temperatures.
authors.affiliation: Department of Radiation Oncology, University of Arizona, Tucson 85721.
authors.forename: J
authors.initials: J
authors.lastname: Zaerr
authors.forename: R B
authors.initials: RB
authors.lastname: Roemer
authors.forename: K
authors.initials: K
authors.lastname: Hynynen
mesh_terms: D000818:Animals; D004285:Dogs; D004867:Equipment Design; D006979:Hyperthermia, Induced / Q000295:instrumentation*; D066298:In Vitro Techniques; D007668:Kidney / Q000502:physiology*; D008954:Models, Biological; D008961:Models, Structural; D009926:Organ Preservation; D015203:Reproducibility of Results; D012984:Software